Sheet-metal work.



No. 837,966. PATENTED DEC. 11, 1906.

M. J. SOHUILING.

SHEET METAL WORK. 3APPLIOATI0N FILED AUG. 28, 1905.

MARTIN J. SOHUILING, OF GRAND RAPIDS, MICHIGAN.

SHEET-METAL WORK.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed August 28.1905. Serial No. 276.174.

T0 (LU whom, it puny concern:

Be it known that I, MARTiN J. SoI-IUILrNe, a citizen of the UnitedStates, residing at Grand Rapids, in the county of Kent and State ofMichigan, have invented certain new and useful Improvements in Sheet-Metal Work and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to improvements in the art of sheet-metal work, andmore particularly to what is known as flared work or the constructing oftruncated conical work of sheet metal, such as the sides of pails, pans,or other conical structures of various kinds; and its object is to sosever the various portions of sheet metal as to materially economize thematerial used for a given structure and to reduce the waste material ofrectangular sheets when used to form such structures, as will more fullyappear by reference to the accompanying drawings, in which Figure 1 is adiagram showing the usual and prior method. of cutting or severing thesheets used for such work from a given sheet; Fig. 2, a plan showing myimproved method of cutting or severing a sheet of the same size as thatshown in Fig. 1; Fig. 3, a side elevation and plan of a truncated coneformed of the material available from a sheet of a certain size by themethod shown in Fig. 1 and Fig. 41:, the same when formed of thematerial made available from a sheet of the same size by my improvedmethod, Figs. 3

and 4 being illustrative of the relative dimen-- sions of the structuresproduced from the same sized sheets by the respective methods.

Referring now to Fig. 1, the dotted outline represents the dimensions ofa sheet from which by the usual method of reverse curves two segments 1and 2 of the largest dimensions possible are shown by the solid lines.Fig. 2 shows a dotted-line outline of a sheet of the same size as thatof Fig. 1, from which by means of my improved method three pieces aresevered having the same radii as the pieces land 2, the pieces 3 and 4having radial outlines at one end only, the other end of eachcorresponding to the outline of the sheet and parallel to each other,thus forming no waste at the ends of the sheet except a very smallamount at the outer ends of the outer radius. These pieces 3 and 4 aresevered on lines concentric with centers located opposite the same sideof the sheet and with the adjacent ends severed on radial lines fromtheir respective centers, the piece 5 therebetween being of a triangularform, the side adjacent to the edge of the sheet being severed on aradius corresponding to the larger radius of each of the pieces 1, 2, 3,and 4 and its other sides having a length equal to the outer ends of thesegments 3 and 4t and severed on the radial lines of the other ends ofthe same and also extended to a point.

When made up into a truncated cone, the pieces 1 and 2 form a vessel ofthe relative size represented in Fig. 3, with two scams 6 6 extending inthe plane of its axis, while the three pieces 3, 4, and 5 when made upinto a truncated cone will have the relative size represented by Fig. 4,with one seam 8 in the plane of its axis and two seams 7 inclined to theplane of its axis and converging to a point at the small end of thecone. By this method I am thus able to materially economize the amountof stock used for a given size of structure with otherwise equally goodresults.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. The herein-described step in the art of making flared work,comprising severing a rectangular sheet into three parts, to wit: twosegments having their curved sides concentric with centers locatedopposite the same side of the sheet and having their outer ends severedon parallel lines corresponding to the ends of the sheet and havingtheir adj acent ends severed on lines radiating from said centers andconverging to a point within the sheet and a third triangular piecehaving two sides severed on the radial line of the segments, and a thirdside severed on a curved line joining the angles of the segments.

2. The herein-described step in the art of making flared work,comprising severing a rectangular sheet into three parts to wit: twocurved segments each having their curved sides concentric withrespective centers both located at the same side of the sheet, andhaving their adjacent ends severed on lines radiating from said centers,and also 1 In testimony whereof I affiX iny signature having their outerends severed on parallel in presence of two Witnesses.

lines correspondin to the ends of the sheet and a third piece having itssides on the lines MARTIN SCHUILING' of severance of the inner ends ofthe first- I Witnesses:

named segments, and of a length equal to the LUTHER V. MOULTON, Width ofthe outer ends of the said segments. GEORGIANA CHAoE.

